What was the real source of the el dorado legend?

"The origins of El Dorado lie deep in South America. And like all enduring legends, the tale of El Dorado contains some scraps of truth. When Spanish explorers reached South America in the early 16th century, they heard stories about a tribe of natives high in the Andes mountains in what is now Colombia. When a new chieftain rose to power, his rule began with a ceremony at Lake Guatavita. Accounts of the ceremony vary, but they consistently say the new ruler was covered with gold dust, and that gold and precious jewels were thrown into the lake to appease a god that lived underwater"

Don miguel gregorio antonio ignacio hidalgo-costilla y gallaga mandarte villaseñor; 8 may 1753 – 30 july 1811, more commonly known as don miguel hidalgo y costilla or simply miguel hidalgo, was a mexican roman catholic priest and a leader of the mexican war of independence.qué hizo  miguel hidalgo  y costilla. el cura  hidalgo  fue quien inició la primera etapa de la guerra de la independencia en méxico, por medio del grito de dolores con el cual inició la lucha por la independencia.el movimiento por la independencia de méxico se inicia la madrugada del 16 de septiembre de 1810 en dolores, guanajuato. en esa madrugada el curamiguel hidalgo y costilla  incitó a la rebelión contra la corona española que había dominado el país por casi 300 años